X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=terminal.coffee;h=141165b85b73ce74848efb1c3ef3f522a9b5d02a;hb=0777de8703279b080aaeed70ae6dcaa0c7257135;hp=d5830c5401e27aa73e159f3db5ee82f570ac92ac;hpb=e5cb729bf87ae7e8a3473a4527af609e49d61321;p=watch-my-terminal.git diff --git a/terminal.coffee b/terminal.coffee index d5830c5..141165b 100644 --- a/terminal.coffee +++ b/terminal.coffee @@ -19,10 +19,14 @@ class Terminal @a = 0x000007 # cursor attributes @partial = '' @saved_normal_screen = null + @cursor_visible = true + @scroll_top = 0 + @scroll_bottom = height - 1 @resize width, height resize: (width, height) -> # FIXME: write a version that retains some of the data + # FIXME: clamp variables (eg x, y, saved.*, scrolling region) if getting smaller @width = width @height = height @text = [] @@ -32,7 +36,7 @@ class Terminal @attributes[y] = [] for x in [0...width] @text[y].push ' ' - @attributes[y].push 0 + @attributes[y].push 0x07 # pass data from stdout update: (data) -> @@ -53,20 +57,26 @@ class Terminal return add_new_line: -> - # clear top line + # clear the line at the top of the scrolling region for i in [0...@width] - @text[0][i] = ' ' - @attributes[0][i] = 0 - # move (newly cleared) top line to the bottom - tmp = @text.shift() - @text.push(tmp) - tmp = @attributes.shift() - @attributes.push(tmp) + @text[@scroll_top][i] = ' ' + @attributes[@scroll_top][i] = 0x07 + + rearrange = (a) => + return [ + a[0...@scroll_top]..., # up to but not including scroll top + a[@scroll_top + 1 .. @scroll_bottom]..., # scroll region except top line of it + a[@scroll_top], # top line of scroll region (already cleared) + a[@scroll_bottom + 1 ... @height]... # rest of screen + ] + @text = rearrange @text + @attributes = rearrange @attributes + # slide cursor up with rest of text @y -= 1 wrap_to_next_line: -> - if @y is @height - 1 + if @y is @scroll_bottom @add_new_line() @y += 1 @x = 0 @@ -100,7 +110,7 @@ class Terminal return set_attribute_bits: (mask, value) -> - @a = (@a & ~mask) | value + @a = ((@a & ~mask) | value) # we're supposed to ignore leeding zeros, and while we're at it, lets swap # in the default for blank or missing values @@ -112,11 +122,45 @@ class Terminal else return deef_alt + # csi_@: rxvt does nothing I can detect + + # move cursor up + csi_A: (lines) -> + lines = parseInt @fix_esc_arg lines, '1' + @y -= lines + if @y < 0 + @y = 0 + return + + # move cursor down + csi_B: (lines) -> + lines = parseInt @fix_esc_arg lines, '1' + @y += lines + if @y >= @height + @y = @height - 1 + return + + # move cursor right + csi_C: (cols) -> + cols = parseInt @fix_esc_arg cols, '1' + @x += cols + if @x >= @width + @x = @width - 1 + return + + # move cursor left + csi_D: (cols) -> + cols = parseInt @fix_esc_arg cols, '1' + @x -= cols + if @x < 0 + @x = 0 + return + # set cursor position (one based) csi_H: (row, column) -> # handle blank/missing args and convert to 0 base - row = @fix_esc_arg(row, 1) - 1 - column = @fix_esc_arg(column, 1) - 1 + row = -1 + parseInt @fix_esc_arg row, '1' + column = -1 + parseInt @fix_esc_arg column, '1' #clamp values if column < 0 @@ -131,6 +175,7 @@ class Terminal #move the cursor @x = column @y = row + return # clear to screen edge(es) csi_J: (direction) -> @@ -184,11 +229,34 @@ class Terminal console.log "confusing arg for csi_K: #{direction}" return + # move lines downwards (arg is how far) + csi_L: (lines) -> + lines = parseInt @fix_esc_arg lines, '1' + + rearrange = (a) => + return [ + a[0...@y]..., # keep everything above cursor + a[@scroll_bottom - lines + 1 .. @scroll_bottom]..., # we'll clear these shortly + a[@y..@scroll_bottom - lines]..., # lines that are moving down + a[@scroll_bottom + 1 ... @height]... # rest of screen + ] + @text = rearrange @text + @attributes = rearrange @attributes + + # clear the lines we scrolled off (and put back in as "new") + for y in [@y...@y+lines] + for x in [0...@width] + @text[y][x] = ' ' + @attributes[y][x] = 0x07 + # misc csiq_h: -> args = [] for i in arguments - switch @fix_esc_arg i, '' + arg = @fix_esc_arg i, '' + switch arg + when '25' + @cursor_visible = true when '1049' if @saved_normal_screen? console.log "ignoring request to switch to the alt screen because we're already on the alt screen" @@ -201,12 +269,19 @@ class Terminal @attributes[y] = [] for x in [0...@width] @text[y].push ' ' - @attributes[y].push 0 + @attributes[y].push 0x07 + else + console.log "confusing arg for csiq_h: #{arg}" + return + # unmisc csiq_l: -> args = [] for i in arguments - switch @fix_esc_arg i, '' + arg = @fix_esc_arg i, '' + switch arg + when '25' + @cursor_visible = false when '1049' if not @saved_normal_screen? console.log "ignoring request to switch to the normal screen because we're already on the normal screen" @@ -216,41 +291,52 @@ class Terminal @text = @saved_normal_screen[2] @attributes = @saved_normal_screen[3] @saved_normal_screen = null + else + console.log "confusing arg for csiq_l: #{arg}" + return # set color, bold, underline, etc csi_m: -> args = [] for i in arguments - args.push @fix_esc_arg i, 0 + args.push @fix_esc_arg i, '0' while args.length > 0 - switch args.shift() - + arg = args.shift() + switch arg # remove all style/color when '0' - @set_attribute_bits 0xffffff, 0x000007 + @a = 0x07 # style attributes when '1' # bold - @set_attribute_bits 0x10000, 0x10000 + @set_attribute_bits 0x010000, 0x010000 + when '3' # italic (rare) + @set_attribute_bits 0x200000, 0x200000 when '4' # underline - @set_attribute_bits 0x20000, 0x20000 + @set_attribute_bits 0x020000, 0x020000 when '5' # blink - @set_attribute_bits 0x40000, 0x40000 - when '8' # invisible - @set_attribute_bits 0x80000, 0x80000 + @set_attribute_bits 0x040000, 0x040000 + when '7' # inverse + @set_attribute_bits 0x080000, 0x080000 + when '8' # invisible. urivt ignores this + @set_attribute_bits 0x100000, 0x100000 # disable style attributes - when '22' # not bold... according to a page - @set_attribute_bits 0x10000, 0 - when '21' # ... though this would make more sense for "not bold" - @set_attribute_bits 0x10000, 0 + when '21' # not bold (rare) + @set_attribute_bits 0x010000, 0 + when '22' # not bold + @set_attribute_bits 0x010000, 0 + when '23' # not italic (rare) + @set_attribute_bits 0x200000, 0 when '24' # not underline - @set_attribute_bits 0x20000, 0 + @set_attribute_bits 0x020000, 0 when '25' # not blink - @set_attribute_bits 0x40000, 0 + @set_attribute_bits 0x040000, 0 + when '27' # not inverse + @set_attribute_bits 0x080000, 0 when '28' # not invisible - @set_attribute_bits 0x80000, 0 + @set_attribute_bits 0x100000, 0 when '100' # reset colors but not other attributes @set_attribute_bits 0xffff, 0x0007 @@ -343,10 +429,22 @@ class Terminal when '107' # bg bright white @set_attribute_bits 0xff, 0x0f - else # if we don't recognize the style, go back to default - @set_attribute_bits 0xffffff, 0 + console.log "unrecognized csi_m arg: \"#{arg}\"" + @a = 0 + return + + # set scrolling region + csi_r: (top, bottom) -> + top = -1 + parseInt @fix_esc_arg top, '1' + bottom = -1 + parseInt @fix_esc_arg bottom, '10000' + if top < 0 + top = 0 + if bottom >= @height + bottom = @height - 1 + @scroll_top = top + @scroll_bottom = bottom return # str is the whole escape sequence (minus the esc[ prefix)